Person regression models
In this chapter, we focus on the person side of the logistic mixed model. As described in Chapter 2, the simple Rasch model can be extended by including person characteristics as predictors. The resulting models can be called latent regression models, since the latent person abilities (the θs) are regressed on person characteristics. A special kind of a person characteristic is a person group: for instance, pupils can be grouped in schools. Then there are two possibilities for modeling, either we can define random school effects, or we can utilize school indicators with fixed effects.
KeywordsItem Difficulty Item Parameter Measurement Occasion Trait Anger Latent Regression
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